5TCzBN
5TCzBN is another sky-blue emitter from the cabzolyl benzonitrile (CBN) family that is used in TADF-OLED devices with great performance.
Acting as an encapsulation shell to the luminophore in 5TCzBN, tert-butyl units are believed to reduce the singlet–triplet splitting (ΔEST) of the compounds, which gives rise to a more efficient reverse inter-system crossing (RISC) process by effectively separating the neighbouring molecules.
General Information
| CAS number | n.a. |
| Full name | 2,3,4,5,6-pentakis(3,6-di-tert-butyl-9H-carbazol-9-yl)benzonitrile |
| Chemical formula | C107H120N6 |
| Molecular weight | 1490.13 g/mol |
| Absorption | λmax 420 nm in toluene |
| Fluorescene | λem 480 nm in toluene |
| HOMO/LUMO | HOMO = 5.75 eV, LUMO = 2.74 eV, T1 = 2.60 eV [1] |
| Classification / Family | Carbazole, Phthalonitrile, TADF materials, Blue dopant materials, Sublimed materials |
Product Details
| Purity | Sublimed >99.0% (1H NMR) |
| Melting point |
Tg = 325 °C (lit.) |
| Appearance | Yellow powder/crystals |
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials for OLED devices page.
Chemical Structure
Device Structure(s)
| Device structure | ITO/HATCN (5 nm)/NPB (30 nm)/TCTA (10 nm)/mCBP:5TCzBN (20 wt%) (30 nm)/DpyPA:Liq (1:1, 30 nm)/LiF (0.5 nm)/Al (150 nm) [2] |
| Colour |
Sky blue 
|
| Max. EQE | 21.2% |
| Max. Power Efficiency | 56.1 Im/W |
| Device structure | ITO/HATCN (5 nm)/NPB (40 nm)/TCTA (10 nm)/30 wt% 5TCzBN: DMIC-TRZ (30 nm)/B3PyMPM (40 nm)/LiF (1 nm)/Al (150 nm) [3] |
| Colour |
Blue
|
| Max. EQE | 19.2% |
| Max. Power Efficiency | 33.8 Im/W |
| Device structure | ITO/HATCN/NPB (30 nm)/TCTA (10 nm)/5TCzBN: mCBP (30 nm)/DPyPA:Liq (1:1, 30 nm)/Al/LiF (0.5 nm) [4] |
| Colour |
Blue
|
| Max. EQE | 21.3% |
| Half-life Time | 12,873h @ 100cd/m2 |
*For chemical structure information, please refer to the cited references.
MSDS Documentation
5TCzBN MSDS sheetPricing
| Grade | Order Code | Quantity | Price |
| Sublimed (>99.0% purity) | M2220A1 | 250 mg | £315.00 |
| Sublimed (>99.0% purity) | M2220A1 | 500 mg | £537.00 |
| Sublimed (>99.0% purity) | M2220A1 | 1 g | £857.00 |
Literature and Reviews
- Sterically shielded blue thermally activated delayed fluorescence emitters with improved efficiency and stability, D. Zhang et al., Mater. Horiz., 3, 145-151 (2016); doi: 10.1039/C5MH00258C.
- Highly efficient and stable blue thermally activated delayed fluorescence emitters, D. Zhang et al., SPIE (2016); DIO: 10.1117/2.1201611.006797.
- Perspective on carbazole-based organic compounds as emitters and hosts in TADF applications, B. Wex et al., J. Mater. Chem. C, 5, 8622 (2017); DOI: 10.1039/c7tc02156a.
- Critical role of intermediate electronic states for spin-flip processes in charge-transfer-type organic molecules with multiple donors and acceptors, H. Noda et al., Nat. Mater., 18(10), 1-7 (2019); DOI: 10.1038/s41563-019-0465-6.
To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.